This paper presents the results of 4 tests which provide information on management of cotton fleahopper in West Texas. In Tests 1 and 2 cotton fleahopper control was observed to be statistically better in the Bidrin^® and Orthenel treated plots than in plots treated with other insecticides. Data on effects of the insecticides tested on beneficial arthropods and bollworms are also presented.

Fleahopper control in Test 3 produced a significant yield increase on infested cotton treated in the early square stage. However, no yield increase was obtained on nearby early bloom stage cotton which was infested with similar numbers of fleahoppers and was treated on the same day.

Cotton fleahopper applications applied on an automatic basis were compared with treatments applied using the Texas threshold (IPM) and untreated check plots in Test 4. Fleahopper numbers and % of squares set were not different between the automatic and IPM plots, but both were superior to the check. No differences between treatments in final yields were observed, however.